The basic wiring harness for hooking up ILHs looks like this.
You can make your own but if you don't have all the materials on hand already it will probably cost about the same (or less) to buy a pre-made harness.
These ILH harnesses allow you to easily connect your ILH to an included lighted dash switch that controls them via the harnesses relay.
Heres what is included:
Inline fuse holder w/several fuses
40 amp 12vdc relay and base with screw type mount
Easy to install (drill hole and insert) rocker type dash switch w/integral indicator light
and all self tapping screws, tap connectors, high temp silicone tape, and "zip" ties needed for line heater and harness installation.
You will need a drill and 3/4" bit (to to make the hole into which the SPST dash switch fits), a medium Phillips screwdriver, pliers, 12v probe (to find the correct wire to tie into for power) and a connection crimper (to securely connect the ILHs to the harness leads). The probe and crimper tools can be ordered with the harness if you do not have them already.
Shipping costs withing the USA is included. An additional shipping cost of from $10-$18 may apply to orders outside the US. International customers will recieve a Paypal request for the additional shipping cost prior to shipment. Harnesses are shipped by Priority Mail and usually arrive with 2 weeks of your order verification.
If you have any questions or need a custom harness fabricated please email me.